Electric socket



Jan. 20, 1931. R. ECKSTEIN ELECTRIC SOCKET Filed Feb. 7. 1929 I N VENTOR. Reu ben Ec/rsfezh BY Ban/alt.

A TTORNE C w m [4 8 w m 7 a eas 1 g a 1 nE BEiTEcksrnm,onNEwfYoRK, 1v;

1 srscmmcsocxn'r j Application filedEebruary 'Zl i'aaf-f'seliai No.seams? I This intentionrelatesetogelectric lighting; socketsimay beconnected either inseries or V sets. More particularly themvjention 1sd1 parallel circuit andfasshown in Fig. 1- are. rected to animprovedlamp socket construcconnected ,mseries. circuit by means offlex-5 f tiiong adapted to be used-in portablelighting isle insulated,covered conductor-.wires l2 to i outfits fordisplay andornamental.illuminaform a. conventional type of 'outfitfiadapted, 55 i "tion, suchas show Windows, Christmas tree to befconnect'ed .t-o a' suitablepoWersu'pply p 7" decorative lighting and other like purposes." (notshown) by mans'ofa plug'capl?) in 7 One objectofthe invention'istoprovide 1 the Well unders'tood manner. in portable lighting outfits ofthe character i @nef a ft e v is 'PlTO Y dG l described, lamp socketsadapted to receive ingescrewtype lamp socketfc'urrent' carryr so{standard screw base lamps in'whichthe conings" partsfhaving a spring'llll replackv It Vventional metallic screw shell contact is e1imi-'ingthefu'sual metallic screwjs'h'ell "contact 7 nated and in placethereofi-ano'vel form of thereby cheapyet-rugged?strum spring contact isprovided. T ture Whichgcajn zbeji easily v and"quickly if?Anothercobject of the in'vention is to prosenibledas W-ill n'oiyv-be;described in detaill r 1 vide a lamp socketconstructioncomprising. Thesocket llggmay comprise a 5 suitably f few and simple parts which are..easily;; an 1;f' mclded lnsulatingjca'singl havingachamu quicklyassembled to form a rugged stljllc jj l'x 1520f, cir larfc'ross-sec-tion eX 11d1ngture', Whichshallbecheap to manufactureland inirm fin-open end-1461?: thereof; aid casing 1 practical and eflicient toa high degree inuse'. bei g formed Withfi 1 61151 W l 7 9 v 7 .Otherobjects of this invention Willin part the'bottom of said chamber. Theside wall-of: be obvious and in part hereinafter :pointed 's'ai'dchamber15 extendinginzfromfsaid casing open end 14a hasuintegrally, formed-Th'e invention accordingly: consists inthe w th a s rew thread 156"adaptedi r ri v 4, features ofconstruction', combinations of 1316- 'Qfa g g the. C I U f I ymentsand arrangements o l parts which Will i sndard'mlmature lamp 4L2.

o be exemplified'in theconstruction hereinafter; The usual metal1 jc'screw shell contact is 'i 5 j described andofwhich thescope ofinventionn re y m a zp t t p ve ill b i di at d inth fgll win 1gi socket l-l yandinstead; the current' carrying I In the accompanying drawings;in which Prt m y compr1sec hel gaily 0 19 i f 4 is shown one 'ofvariouspossible"illustrative p mg Q I O nd a springcenter j F j mbodim nt fthiijw i-i fi r q 18, the latter being mountedvon an lnsulatmg Figyl is" afront elevational View, partly-l P 1 QI B endzl'iaofthe h61 diagrammaticshowing a portableseriesflcj cal sprmg cont-act 1( connects with oneof'j cuit Christmas tree lighting outfit formed i116vconductQrr-wlrfsclg1111 Yf P 3 Q With'lamp sockets constructed toembody the ll f y meansfol F soldered 1 invention. v c I spring contact17 ispreferably anchored to Fig. 2 is a cross-sectional view taken fileWaher yp s e'qo w 61 d 12% through one of the improved assembled lamp hrug e p m wp r ed th 7 sockets-showing the interior-"construction port onof the. asher- 19 5 8 a yn 2 5" a mounted I I ln Flags; 3-,: OtheriendFig-i3 is a cross-sectional-Kiie of the imihehcffill p lt g p fi l y"? jm 9 i proved lamp socket showing the parts'sepa p v d 3? n i h 1 1f b tn u t d d sfo i bl a d; l "16a termlnatlng the lampfbase 16 ses and I,45 Fig. lf is a cross-sectionak-Vievv taken on -r p i ned n act W the "11 3 7 fi Hi Fi 2 c screw plug contact 16b of the lamp base: 16 g'Referring in detail to the drawing, 10 desshpw lfie-.2 f -1 1 :,f anotes a Christmas lighting outfit formed with a ,7 f iprl gent son s t8. P@ s 6 a plurality of miniature-sized lampsockets tr 1'1y.i 1r gh a ss-1 9?) p vi ed 3- f 11 constructed to-embody the invention, said;washer; 19:, the s rin -seminal; nd. 1 d 63X V tending on the upper sideof said washer being adapted to connect with the center contact 160 ofthe lamp base 16. The other terminal end 185 of the contact 18 on thelower side ofthe washer connects with the other of said conductor wires'12 in any suitable manner as bysoldered joint 12b.

v The" currentcarrying parts are thus as sembled'within the socketchamber below the; threads 15?) with the conductor wires 12 spacedrelatively widely apart from each other. The closed end wall 14?) of thecasing is provided with passages 140 through which the conductor wires12-e2gtend to connect the socket in circuit. s

The assembly of the socket parts will now be apparent. With theconductor wires 12 extended through the passages 1 10 of the easing 14as shown in Fig. 3*,the helical spring contact '17 and the spring centercontact 18 are soldered to the ends of the conductor wires 12, saidcontacts first being mounted on the washer 19 as described above.

The currcnt carrying parts are next inserted into the casing 14 andhoused in the chamber 15 to abut the end wall 14b and below the threads15?); The socketll is now ready to 'receive the lamp base 16 insertedinto the casing opening 14%; The threads 15b engage" the screw plugcontact 16b of the lamp base 16-and onscrewing the latter into thechamberf1'5, the'button 16a of the helical spring contact 17-andconnects the base plug contact 16?; with the latter. The center contact160 of the lamp base is simultaneously lowered to connect with thespring end 18a thus completing the circuit of the lamp with theconductor wires 12. The im proved socket 11 thus forms. a simplestructure which eliminates the usual metallic shell contact and providesspring contacts v which aid in retaining the lamp from being accidentlyloosened in itsscrew;mounting..

It will thus be seen that there is provided apparatus in which theseveral objects of this invention are achieved and which is well adaptedto meet the conditions of practical use.

As various possible embodiments might be made of the above invention andas various changes might be made in the embodiment above set forth, itis to be understood that all matter herein set forthor shown in: theaccompanying drawingis to be interpreted as illustrative and not-in alimiting sense except as to such limits imposed by the scope of theclaims. a v

Having thus described my invention I claim as new-and desire to secureby Letters Patent 1. A lamp socket for connecting to flexible.conductors comprising a tubular insulating casinghaving a closed endwalhsaid casing formed with an integral thread portion adapted toreceive a screw lamp base and current carrying parts in said casing abutting said Wall, said parts including a contact movable axially to andfrom said threaded portion adapted to connect with the plug contactshell of said lamp base.

'2. In a lamp socket construction, a casing having an integral threadedportion formed of insulating material adapted to receive a screw lampbase, and a helical resilient cur rent carrying II IeIIIbeI'cooperatingly positioned with respect to said casing threaded portionadapted to connect electrically with the plugcontactshell of the lampbase engaged with said casing threaded portion;

1 A- lampsocket construction ofthe character described adapted to befitted with a conventional screw bajselamp; comprising insulatingthreaded means for'engaging with the screw plug contact of said lampbase, and

helicalfspring contact means for electrically connecting with saidscrewbase contact on cngaging'said lamp with said means.

a 4. In combinatiom' a conventional screw base lamp and a socket havingan insulating casing formed" with integral threads for engaging with theplug. screw contact of said lamp, and a yieldable helical spring contactfor connecting with the plug contact shell ofthe lamp base mounted insaid casing to resist'ent'rance of the :lamp base into said v *soclcetm.1 o lamp base seats itself on the end 17 b of the 5". In a socket ofthecharacter described, a contact co-mprlsing a helically wound currentcarrying spring having one end thereof said opening endi'beingformedwith-integral threads adapted to receive the screw. plug base of aconventional lamp, current carrying members in" said chamber below saidthreads, said members including a helically wound compression spring anda center con.- tact mounted on an insulating washer, said casingwallhaving spaced passages coinmunicating with said chamber, andconductor wires extending through said passages connectingwithsaidcurrent carrying memv OBI'S. I I

In testimony whereof I atlix my signature.

1 REUBEN EOKSTEIN,

